“While the holy city was inhabited in unbroken peace, the laws were strictly observed. This was due to the piety of the high priest Onias and his hatred of wickedness. It came about that the kings themselves honored the place and glorified the temple with the finest presents. Even King Seleucus of Asia defrayed from his own revenues all the expenses connected with the service of the sacrifices.”
This author reminds us of the good old days when things were peaceful in Jerusalem. The Mosaic laws were strictly observed because the good pious high priest, Onias III was in charge from 199-175 BCE. He hated wickedness. In fact, the Seleucid dynasty of kings honored this Second Jerusalem Temple with many presents, especially the Asian King Seleucus IV (186-175 BCE). Everything was wonderful because this king sent money to defray the expenses of the Temple in Jerusalem. 175 BCE seems to be the turning point here. Before that, everyone was happy.
Eugene Finnegan Bible Project 